001: /*
002: * ====================================================================
003: *
004: * The Apache Software License, Version 1.1
005: *
006: * Copyright (c) 1999-2003 The Apache Software Foundation. All rights reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright notice,
012: * this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright notice,
015: * this list of conditions and the following disclaimer in the documentation
016: * and/or other materials provided with the distribution.
017: *
018: * 3. The end-user documentation included with the redistribution, if any, must
019: * include the following acknowledgement: "This product includes software
020: * developed by the Apache Software Foundation (http://www.apache.org/)."
021: * Alternately, this acknowledgement may appear in the software itself, if and
022: * wherever such third-party acknowledgements normally appear.
023: *
024: * 4. The names "The Jakarta Project", "Commons", and "Apache Software
025: * Foundation" must not be used to endorse or promote products derived from this
026: * software without prior written permission. For written permission, please
027: * contact apache@apache.org.
028: *
029: * 5. Products derived from this software may not be called "Apache" nor may
030: * "Apache" appear in their names without prior written permission of the Apache
031: * Software Foundation.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
034: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035: * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE
036: * SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
037: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
038: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
039: * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
040: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
041: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
042: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
043: * ====================================================================
044: *
045: * This software consists of voluntary contributions made by many individuals on
046: * behalf of the Apache Software Foundation. For more information on the Apache
047: * Software Foundation, please see <http://www.apache.org/>.
048: *
049: */
050:
051: package wicket.util.diff;
052:
053: import java.util.List;
054:
055: /**
056: * Holds an add-delta between to revisions of a text.
057: *
058: * @version $Id: AddDelta.java,v 1.1 2006/03/12 00:24:21 juanca Exp $
059: * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>
060: * @see Delta
061: * @see Diff
062: * @see Chunk
063: */
064: public class AddDelta extends Delta {
065: /**
066: * Construct.
067: */
068: AddDelta() {
069: }
070:
071: /**
072: * Construct.
073: *
074: * @param origpos
075: * @param rev
076: */
077: public AddDelta(int origpos, Chunk rev) {
078: init(new Chunk(origpos, 0), rev);
079: }
080:
081: /**
082: * @see wicket.util.diff.Delta#verify(java.util.List)
083: */
084: public void verify(List target) throws PatchFailedException {
085: if (original.first() > target.size()) {
086: throw new PatchFailedException(
087: "original.first() > target.size()");
088: }
089: }
090:
091: /**
092: * @see wicket.util.diff.Delta#applyTo(java.util.List)
093: */
094: public void applyTo(List target) {
095: revised.applyAdd(original.first(), target);
096: }
097:
098: /**
099: * @see wicket.util.diff.Delta#toString(java.lang.StringBuffer)
100: */
101: public void toString(StringBuffer s) {
102: s.append(original.anchor());
103: s.append("a");
104: s.append(revised.rangeString());
105: s.append(Diff.NL);
106: revised.toString(s, "> ", Diff.NL);
107: }
108:
109: /**
110: * @see wicket.util.diff.Delta#toRCSString(java.lang.StringBuffer,
111: * java.lang.String)
112: */
113: public void toRCSString(StringBuffer s, String EOL) {
114: s.append("a");
115: s.append(original.anchor());
116: s.append(" ");
117: s.append(revised.size());
118: s.append(EOL);
119: revised.toString(s, "", EOL);
120: }
121:
122: /**
123: * @see wicket.util.diff.Delta#accept(wicket.util.diff.RevisionVisitor)
124: */
125: public void accept(RevisionVisitor visitor) {
126: visitor.visit(this);
127: }
128: }
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